@media(max-width: 1310px) {
    .letter_text {
        max-width: 1000px;
        max-height: 400px;
    }
}
@media(max-width: 1100px) {
    .letter_text {
        max-width: 800px;
    }
}
@media(max-width: 870px) {
    .letter_text {
        max-width: 600px;
        max-height: 300px;
    }
}
@media(max-width: 660px) {
    .letter_text {
        max-width: 400px;
    }
}
@media(max-width: 475px) {
    .letter_text {
        max-width: 300px;
    }
}
@media(max-width: 380px) {
    .letter_text {
        max-width: 200px;
    }
}